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I want to set different TTL value on every save operation of particular document. Like I have one document containing employee and designation fields.

For every new employee, based on designation value TTL should be set accordingly. Like if employee is Solution Architect then document expiry should be set for 30 Days. If designation is "Senior Architect" then expiry should be set as 20 Days.

I know how to set expiry through spring Framework, but how to set it dynamically? PFB:

@Document(expiry = Constants.COUCHBASE_RESOURCE_TTL)
public class EmployeeResource { 
}
Jonathan Hall
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Shilpi
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2 Answers2

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You can touch the document just after saving it and set the TTL defined by a variable.

Let's say that you have a method called getTTLByEmployee which will return the TTL (int) by Employee type. You can do something like:

Employee savedEmployee = yourRepository.save(employee);
yourRepository.getCouchbaseOperations().getCouchbaseBucket()
          .touch(savedEmployee.getId(), getTTLByEmployee(employee.getEmployeeType()));
juanlumn
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  • This is the correct answer. As of spring-data-couchbase:4.3.0 the code should look like `yourRepository.getOperations().getCouchbaseClientFactory().getCollection(null).touch(id, ttl);` or alternatively this can be done as `couchbaseTemplate.getCollection(null).touch(id, ttl)` – Roman Sinyakov Jan 04 '22 at 10:09
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You can use http://docs.couchbase.com/sdk-api/couchbase-java-client-2.2.4/com/couchbase/client/java/Bucket.html#touch-java.lang.String-int- method to extend/renew the TTL for the document at runtime, in addition to the default setting.

PKV
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  • also check https://stackoverflow.com/questions/31528665/how-to-set-ttl-for-a-specific-couchbase-document-using-spring-data-couchbase/31751411 – PKV Jul 19 '18 at 12:21